Self-paced
Support Almost all microbe species live together in dense, interdependent communities, supporting the environment for each other, and regulating the population balances for their different species through a complex system of chemical signals. ███ ████ ███████ ██ ██ █████████ ██████████ ██ █████████ ███ ███ ████ ███████ ██ ██████████ █████ ███████████████ ████ ████████ █████████ ██ ████ ███████ ████████
Summary
Nearly all microbe species live together in interdependent communities, so it’s currently impossible to cultivate any such microbe in isolation. Therefore, microbiologists lack total knowledge of most microbe species.
Missing Connection
The conclusion is about complete knowledge of microbe species, but the premise never mentions complete knowledge of microbe species.
How to get from premise to conclusion? According to the premise, we cannot currently raise most kinds of microbes in isolation. We can infer the conclusion if we assume that you must cultivate something in isolation to have complete knowledge of it.
25.
Which one of the following, ██ ████████ ███████ ███ ██████████ ██████████ ██ ██ ████████ ██████
a
It is currently ██████████ ███ ███████████████ ██ █████████ ███ ███████ ███████ ██ ████████ ███████ ████ █████ ███████ ███████████ ████████ ███ ██████████ ████████ ███ █████ █████████ ████████
This doesn’t discuss how to acquire complete knowledge of a microbe species, so it can’t be right. The argument’s conclusion is about complete knowledge of a microbe species, yet the premise never discusses complete knowledge of a microbe species. The correct answer must bridge this gap.
b
If it is █████████ ██████████ ██ █████████ ███ █████████████ ████████ ███ ████████ ███████ ██ ██████ ██████████████ ███████████ ██ ███████ ████████ ████ ██ ██ ████ ██████████ ██ █████████ ███ ███████ ███████ ████ ████ █ █████████ ██ ██████████
This doesn’t discuss how to acquire complete knowledge of a microbe species, so it can’t be right. The argument’s conclusion is about complete knowledge of a microbe species, yet the premise never discusses complete knowledge of a microbe species. The correct answer must bridge this gap.
c
No microbiologist can ████ ████████ █████████ ██ ███ ███████ ██ ████████ ██████ ████ ██████████████ ███ █████████ ████ ███████ ██ ██████████
According to the premise, we can’t currently cultivate most microbe species in isolation. If (C) is true, we can infer that microbiologists lack complete knowledge of most microbe species, which is the argument’s conclusion.
d
At least some ███████████████ ████ ████████ █████████ ██ ███ ███████ ███████ ████ ████ ████████ ██ ██████ ██████████████ ████████████
(D) just restates what’s implied in the argument’s conclusion. The correct answer choice must verify that conclusion.
e
No microbe species ████ ████████ █████ ████████ ████ █████ ███████ ███████ ██ ██████ ██████████████ ███████████ ███ ███████ ███████ ████ █ ██████████
This doesn’t discuss how to acquire complete knowledge of a microbe species, so it can’t be right. The argument’s conclusion is about complete knowledge of a microbe species, yet the premise never discusses complete knowledge of a microbe species. The correct answer must bridge this gap.